National Tunnel Inspection Program: Compliance Review Manual
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

For very narrow results

When looking for a specific result

Best used for discovery & interchangable words

Recommended to be used in conjunction with other fields



Document Data
Clear All
Clear All

For additional assistance using the Custom Query please check out our Help Page


National Tunnel Inspection Program: Compliance Review Manual

Filetype[PDF-763.53 KB]



  • Corporate Creators:
  • Subject/TRT Terms:
  • Resource Type:
  • Geographical Coverage:
  • Corporate Publisher:
  • Abstract:
    In 2010, FHWA developed a new systematic, data-driven, risk-based oversight process for monitoring State compliance with the National Bridge Inspection Standards (NBIS). Based on the success of that process, FHWA has now developed a similar process for the recently implemented National Tunnel Inspection Standards (NTIS) required by 23 U.S.C. 144(h). This process utilizes 15 metrics, or measures, to define 1) the levels of compliance, 2) items from the NTIS to be measured, and 3) how those measurements affect the levels of compliance. Each metric can be traced directly to wording in 23 CFR 650 Subpart E. The metrics were developed over a 2-year period by a committee which consisted of FHWA Division, Resource Center, and Headquarters bridge and tunnel engineers. Refinements were made to the metrics based upon feedback received during development, including discussions based on pre-pilot evaluation of the metrics with a few States. In 2017, the FHWA initiated a pilot program using the new process in eight additional States. The FHWA made further adjustments to the process and the metrics following these pilots, in preparation for nationwide implementation in June 2019.
  • Format:
  • Collection(s):
  • Main Document Checksum:
  • Download URL:
  • File Type:

You May Also Like

Checkout today's featured content at